Attachment for bearings



J. A. ANDERSON1 ATTACHMENT FOR BEARINGS.

APPLICATION FILED APR.12.1919.

Patented J une L, 1920.

Y l` l/ `ICJ-IIN A. ANDERSON, or GENEsEo, ILLINOIS.

ATTACHMENT FOR BEARINGS.

Application ned April 12,

To all whom t may concern:

Be it known that I, JOHN A. ANDERSON, a citizen of the United States, residing at Geneseo, in the county of Henry and State of Illinois, have invented a new and useful Attachment for Bearings, of which the following is a specification. A

This invention relates to improvements in bearing attachments, the object of the invention being to provide an improved attachment adapted to be applied to bearings, boxings, journals or slides for the purpose of automatically taking up wear or end play on shafts, collars and the like, and whici attachment ,is comparatively simple in construction and very efficient in use.

Tith the foregoing and other objects in view, which will appear as the description proceeds, the invention consists in the novel features of construction and combination of parts which will be more fully described hereinafter and particularly pointed out in the claims.

ln the drawing accompanying and forming part of this specification,

Figure 1 is a side view of the device in assembled condition;

Fig. 2 is an end view of one of the nuts forming a part of the device;

Fig. 3 is a side view of the spring;

Fig. 4 is an end elevation of a journal bearing showing my improved attachment applied thereto; and

Fig. 5 is a side viewshowing an application of the device for taking up end play of a shaft.

rl`he same characters of reference designate correspondingV parts in the different figures of the drawings.

1t is well known that bearings on machinery when worn may cause many defects. among which may be mentioned the loss of oil, hot boxes` knocks, play, vibration. and deflection of other parts of the mechanism. 4rlie present invention is intended not only to overcome all of these defects and thereby render the machinery more durable, but also, in the testing of bearings. to save time and labor in determining the actual tightness of the bearing necessary for the best results. as well as to ca se the bearing to wear true.

i-lfqierring to drawings, 2 designates a threaded bolt of any size suitable for the particular machinery on which it is to be used and having any preferred forma- Speeication of Letters Patent.

Patented June 1, 1920.

1919. Serial No. 289,503.

. tion of head. A pair of nuts 3 and 4 are adapted to be threaded on the bolt 2, each of said nuts being formed with an integral portion, 5 and 6 respectively, forming a boss or collar, the nuts` being adapted to be placed on the bolt in such manner that the bosses 5 and 6 are adjacent each other. Between the nuts 3 and 4 is mounted on the bolt 2 a helical spring 7 having its opposite ends formed into hooks 8 extending inv Opposite directions. Each of the nuts 3 and 4 is cut away at a portion of its periphery to provide a hook-shaped portion 9 with which the hook of the spring adjacent to the nut is engaged, the hook portions of the nuts extending in opposite directions from the adjacent hook of the spring, whereby the nuts are assembled on the bolt with the spring located between them and its hooks in engagement with the hookshaped portions,of the nuts the spring will be placed under tension by rotating one of the nuts while the other is held stationary. A check nut 10 is provided, adapted to be screwed on the bolt 2 into engagement with the nut 3 after the latter has been turned to bring its collar into engagement with the collar of the nut 4.

The device is capable of alarge number of applications, two of which are shown herein. ln the application shown in Fig. 4, the bearing blocks 11 and 12 are each provided with an opening at each end thereof through which a bolt 2 passes upwardly, the lower block 11 being provided in its under face with countersunk openings, shown in dotted lines. for the heads of the bolts 2. 1n this case, after the block 12 is placed in position on the bolts 2. the nuts are applied to the ends of the bolts in the manner hereinbefore described. lt will readily bc seen that when the nut 4 is crewed down on the bearing block 12 and the spring placed under tension by rotating the nut 3 until its collar 5 engages the collar 8 of nut 4 and then turning the check nut 10 down into contact with the nut 3. shouid the bearings become worn thc tension of the sprintf wiliL cause rotation of the nut 4 and 'thereby force the bearing block 12 downwardly toward the block 11.

ln the application shown in Fig. the device is adapted for taking up the end play of a shaft. in this construction one of the standards 1S cariving the bearings for the shaft 14 provided with an opening for the passage of the bolt 2, said standard being also provided with a countersunk opening at its inner side, shown in dotted lines, for receiving the headof the bolt. The standard is further provided with an outwardly projecting bracket 15 on which is pivoted a bearing plate 16, the opposite end of which is provided with an opening for the passage of the bolt 2. The plate 16 is also pro' vided at the side thereof adjacent the standard with a cylindrical projection or stud 17 having its end adapted to fit into a concave recess, shown in dotted lines, in the end of the shaft 14. It will be seen that in this con-v struction the attachment will exert constant pressure on the end of the shaft, thereby maintaining the collar 18 in close contact with the opposite bearing 13, whereby the pulley 19 or any other power transmitting device that is secured to the shaft will always turn true.

The formation of the bosses or collars 5 and 6 on the nuts provides a structure whereby when the nuts are screwedtogether so that the bosses are in contact, in case of the breaking of the spring the nut 4 cannot rotate backwardly. Of course itwill vbe understood that the collars may be formed separately from the nuts, if desired.

Thile I have described in detail the structure herein illustrated, it is to be understood that I do not thereby limit my invention to the precisel features of construtcion shown as I am aware that many mechanical changes may be made therein without departing fromv the spirit and scope of the invention as set forth in the appended claims.

Having thus described my invention, what I claim is: f'

1. A device of the class described, comprising' a bolt, a pair of nuts on said bolt, a pair of terminally abutting collars between said nuts, each of the nuts being provided in4 its periphery with a hook-shaped portion, a helical spring disposed about the collars having its ends hooked in opposite directions and adapted to engage said hookshaped portions, and means for locking said nuts with the interposed collars in engagement thereby to place said spring under tension and lock said nuts against retraction on the bolt.

2. A device of the class described, co1nprising a bolt, a pair of nuts threaded on said bolt, and each having an integral col-- lar formed thereon, said nuts being adapted to be screwed together on the bolt with their collars in engagement, a helical spring encircling said collars, cooperating meansr carried by said spring and nuts for placing the spring under tension, and means for preventing retractive movement of the nuts whereby the tension of the spring urges one of the nuts forwardly.

`vIn testimony that I claim the foregoing as my own, I have hereto aflixed my signature in the presence of two witnesses. JOHN` A. ANDERSON. lVitnesses:

G. A. JOHNSON, W. R. REHERD. 

